Exception in program: javax.naming.NoInitialContextException

Im running a JMS Application using a queue. 

- It runs Fine.

- BUT when I do a Debug (F7 in netbeans) , It gives an exception in method initJMS()  (code attached).

 javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial

 private void initJMS() throws JMSException      {          try         {             jndi = new InitialContext();         }         catch(Exception e)         {             JOptionPane.showMessageDialog(null, e);         }         try         {             ConnectionFactory connectionFactory = (ConnectionFactory)jndi.lookup("jms/ConnectionFactory");             Queue queue = (Queue)jndi.lookup("jms/Queue");             connection = connectionFactory.createConnection();                     session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);             dest=(Destination)queue;             producer = session.createProducer(dest);         }          catch(Exception e)         {              System.out.println(e);             JOptionPane.showMessageDialog(null, e);         }     }

 Ans : 

 Thanks for the tidbit.  This is for GlassFish: https://glassfish.dev.java.net/javaee5/docs/DG/beanr.html.  Can also see this: http://weblogs.java.net/blog/kalali/archive/2006/05/step_by_step_to_2.html.

 Ans 1 : 

 
 
 
 Try this...
http://java.sun.com/products/jndi/tutorial/beyond/env/source.html
 
Apparently, my code is out in the car.  But if you scroll to the bottom, you will see an example of putting value in environment using HashTable.
 
The approach I used was same as that, but instead of Context.Applet, I was using INITIAL_CONTEXT_FACTORY (http://java.sun.com/j2se/1.4.2/docs/api/javax/naming/Context.html).  In my case I used the context factory for NDS, but you would just put in appropriate value as indicated as a fully qualified classpath to the context factory for your application.